公开(公告)号：US20210344167A1

公开(公告)日：2021-11-04

申请号：US17245242

申请日：2021-04-30

Applicant: The Trustees of Princeton University

Inventor： Chu C. Teng ,  Jonas Westberg ,  Gerard Wysocki

IPC: H01S5/0687 ,  H01S5/14

Abstract: According to various embodiments, a system for stabilizing operation of semiconductor laser frequency combs via optical feedback is disclosed. The system includes an external cavity having a beam-splitter, polarizer, and mirror or partially reflective element mounted on a translational stage. The external cavity and a laser facet of the semiconductor laser form an external optical resonator for coupling light to a laser cavity.

公开(公告)号：US11815450B2

公开(公告)日：2023-11-14

申请号：US17689579

申请日：2022-03-08

Applicant: The Trustees of Princeton University

Inventor： Chu C. Teng ,  Gerard Wysocki

IPC: G01N21/31

CPC classification number: G01N21/31 ,  G01N2201/0231 ,  G01N2201/0612 ,  G01N2201/12

Abstract: Disclosed are a system and method for active stabilization of parasitic fringes in optical spectrometers, wherein the spectrometer obtains the transmission spectrum, and a signal processor extracts the etalon drift from the spectral signatures of parasitic fringes. The disclosed approach improves spectrometer accuracy, minimizes drift, and increases time between calibrations.

公开(公告)号：US20220291119A1

公开(公告)日：2022-09-15

申请号：US17689579

申请日：2022-03-08

Applicant: The Trustees of Princeton University

Inventor： Chu C. Teng ,  Gerard Wysocki

IPC: G01N21/31

Abstract: Disclosed are a system and method for active stabilization of parasitic fringes in optical spectrometers, wherein the spectrometer obtains the transmission spectrum, and a signal processor extracts the etalon drift from the spectral signatures of parasitic fringes. The disclosed approach improves spectrometer accuracy, minimizes drift, and increases time between calibrations.